Building a DK7ZB match for the Yagi Test Setup

Today we will construct a 2m dipole using the DK7ZB match. This matching system is pretty simple to build. Basically, Two pieces of 75 ohm coax are cut to 1/4 wave length and connected between the antenna and the feed line. For this project, I will be using RG-6 Quad shield.

The Test setup was built in a past post using the plans above.
Advertisements

The screw holes for the dipole are sized to install threaded inserts. This should make a strong connection and prevent the treads from striping. The length of the radiating elements were calculated using an online calculator.

The RG-6 used would not accept solder on the outer braid. On the radiating element side, a ring terminal is crimped to the outer braid. The BNC connector side has a small jumper soldered to the connector and connected to the braid with a piece of terminal strip.

Advertisements

Make sure the coax in the matching runs parallel to each other.

The top is printed in green to save time. A second machine was used for the top and was loaded with green.
Advertisements

The new Dipole was easily installed on the boom. Before mounting back on to the testing mast, a small piece of of aluminum and a second u-bolt will be added. Once this is added and the antenna tuned, another post will be made.

Advertisements

Links

https://www.qsl.net/dk7zb/dk7zb-match.htm

http://www.westmountainradio.com/antenna_calculator.php

https://km4nmp.com/2019/08/04/building-the-146-mhz-yagi-dipole-test-setup/

https://km4nmp.com/2019/07/28/146-mhz-yagi-dipole-testing-setup/

https://www.changpuak.ch/electronics/yagi_uda_antenna_DL6WU.php

Advertisements

Latest Posts

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this:
search previous next tag category expand menu location phone mail time cart zoom edit close